Maxam Falcon IV Lockback Knife on a Key Chain. This handy knife on a key chain features an extra sharp 1-78" 420 surgical stainless steel half serrated blade to cut cord or twine easier and lightweight Leymar handle. The thumbhole allows one-handed opening with either the left or right hand. Measures 4-12" long opened and 2-12" closed. Lifetime warranty. Gift boxed 1 lb.